Okay y'all I am plain dumb I guess. I use an app on my phone that is like the fuely app. I just filled up tonight and the app said I got 14.5mpg. Now I know its not right due to me having larger tires. So I am asking how to calculate it right. Truck came with 265/75-16 tires. Currently has 37/13.50-17 tires. According to a converter it shows that the tire I have now is 59.2% larger. Seems a little large. But If you all could help me please I would be appreciative of it.

Okay y'all I am plain dumb I guess. I use an app on my phone that is like the fuely app. I just filled up tonight and the app said I got 14.5mpg. Now I know its not right due to me having larger tires. So I am asking how to calculate it right. Truck came with 265/75-16 tires. Currently has 37/13.50-17 tires. According to a converter it shows that the tire I have now is 59.2% larger. Seems a little large. But If you all could help me please I would be appreciative of it.

If you can find someone with an Autoenginuity scan tool, you can set your vehicle to the tire size that you have on the vehicle vs. stock.

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